Dust respirator



FIG. 1 is a top plan view of a dust respirator embodying the new design;

FIG. 2 is a front view of the new design, the rear view being identical to the front view;

FIG. 3 is a bottom plan view of the new design;

FIG. 4 is a side view of the new design with the straps broken away, each side being identical in appearance;

FIG. 5 is a top plan view of a modified form of the mask illustrated in FIG. 1;

FIG. 6 is a front view thereof, the rear view being identical to the front view;

FIG. 7 is a bottom plan view thereof; and

FIG. 8 is a side view thereof with the straps broken away, each side being identical in appearance. 

The ornamental design for a dust respirator, substantially as shown and described. 